Input Circuitry for One Analogue Channel on the NI 9205 61

ix LIST OF FIGURES 2.1 DAQ platforms 9 2.2 National Instrument 9

2.3 Low-Channel-Count, Single DAQ Devices 10

2.4 Medium-Channel-Count, Modular DAQ Systems 10 2.5 High-Channel-Count, Modular DAQ Systems 11 2.6 DATAQ Instruments 13 2.7 Texas Instruments 15 2.8 Wire Gas Sensor Solution 19 2.9 Jobs consists of tasks that, in turn, consists of actions 29 2.10 Temperature Sensors 30 2.11 Sound sensors 34 2.12 Light Sensors 36 2.13 Light dependent resistor cross section 37 2.14 Photo-junction device 37 2.15 Humidity sensors 39 2.16 Resistive-polymer sensor 41 2.17 Simple capacitive sensor 41 2.18 LabVIEW 43 2.19 MATLAB 44 2.20 Altia DeepScreen 45 2.21 EICASLAB 46 3.1 Project flow chart 48 3.2 Top view of chassis 56 3.3 Front view of chassis 56 3.4 Side view of chassis 57 3.5 NI 9203 module 58 3.6 Input circuitry on the NI9203 59 3.7 Connecting Single-Ended Current Signals to the NI 9203 60 3.8 NI 9205 Module 60

3.9 Input Circuitry for One Analogue Channel on the NI 9205 61

x 3.10 Connecting a Device to the NI 9205 Using Differential Connections 62 3.11 Connecting a Device to the NI 9205 Using RSE Connections 62 3.12 Connecting a Device to the NI 9205 Using NRSE Connections 63 3.13 Light sensor module 64 3.14 LM 35 65 3.15 DAQ system conceptual design 66 3.16 Humidity DAQ 66 3.17 Light DAQ 67 3.18 Sound DAQ 68 3.19 Temperature DAQ 69 3.20 Initialization state front panel 70 3.21 Initialization state block diagram 70 3.22 Home ideal state front panel 71 3.23 Home ideal state codes 71 3.24 Framework for User ideal code 72 3.25 Framework for run code 73 3.26 Quit initialization function 73 3.27 Quit homepage 74 3.28 Quit parameter interface 74 3.29 Saving application 76 3.30 Tab control function 77 3.31 Tab change 78 3.32 DAQmx function 78 3.33 Alarm VI 79 3.34 Alarm VI front panel and block diagram 79 3.35 Warning function 80 3.36 Category function 81 3.37 GUI of Humidity 82 3.38 GUI of Temperature 83 3.39 GUI of Light 84 3.40 GUI of Sound 85 3.41 GUI of Combined 86 3.42 Flat sequence 87 3.43 Block diagram of Humidity interface 88 xi 3.44 Humidity phase I block diagram 89 3.45 Humidity phase II block diagram 90 3.46 Humidity phase III block diagram 91 3.47 Block diagram of Temperature interface 92 3.48 Temperature phase I block diagram 93 3.49 Temperature phase II block diagram 94 3.50 Temperature phase III block diagram 95 3.51 Block diagram of Light GUI interface 96 3.52 Light phase I block diagram 97 3.53 Light phase II block diagram 98 3.54 Light phase III block diagram .. 99 3.55 Block diagram of Sound GUI interface 100 3.56 Sound phase I block diagram 101 3.57 Sound phase II block diagram 102 3.58 Sound phase III block diagram 103 3.59 Block diagram of Combined GUI interface 104 3.60 Combined phase I block diagram 105 3.61 Combined phase II block diagram 107 3.62 Combined phase III block diagram 109 3.63 TSI TA465 110 3.64 ExTech Light Meter 111 3.65 Temperature validation test set up 112 3.66 Light validation test set up 113 4.1 Finalize DAQ platform 116 4.2 User press Start during initialization state 117 4.3 Block diagram flow during initialization 118 4.4 User choose HUMIDITY 119 4.5 Block diagram flow when HUMIDITY is chosen 120 4.6 User choose TEMPERATURE 121 4.7 Block diagram flow when TEMPERATURE is chosen 122 4.8 User choose LIGHT 123 4.9 Block diagram flow when LIGHT is chosen 124 4.10 User choose SOUND 125 4.11 Block diagram flow when SOUND is chosen 126 xii 4.12 User choose COMBINED 127 4.13 Block diagram flow when COMBINED is chosen 128 4.14 User choose physical channel 129 4.15 Setting input terminal 130 4.16 Setting frequency of reading 130 4.17 Setting upper and lower boundary 131 4.18 Pressing file icon 131 4.19 Setting save function 132 4.20 User starting acquisition 132 4.21 Acquisition block diagram flow 134 4.22 User stop acquisition 136 4.23 User return to homepage during ideal 137 4.24 User quit in initialization 138 4.25 Code for quitting during initialization 138 4.26 User quit from homepage 138 4.27 Code for quitting from homepage 139 4.28 User presses quit during acquisition 139 4.29 User quit from a parameter interface during ideal 140 4.30 User quit from a parameter interface during ideal 140 4.31 Code for quitting from parameter interface Ideal state 141 4.32 Warning for above upper limit 141 4.33 Warning for below than lower boundary 142 4.34 Warning case 142 4.35 Lower limit is set higher than upper limit during acquisition 143 4.36 Limit error issued during acquisition 143 4.37 Lower limit higher than upper limit during ideal 143 4.38 Limit error issued after ideal case 145 4.39 LabTemp1 chart using DAQ platform 149 4.40 LabTemp1 chart using TSI Airflow Instruments 149 4.41 LabTemp2 temperature reading using DAQ platform 150 4.42 LabTemp2 temperature reading using TSI Airflow Instrument 150 4.43 LabTemp3 temperature reading using DAQ platform 151 4.44 LabTemp3 temperature chart using TSI Airflow Instruments 151 4.45 LabTemp1 comparison chart 152 xiii 4.46 LabTemp2 comparison chart 152 4.47 LabTemp3 comparison chart 152 4.48 LabLight1 chart using DAQ platform 160 4.49 LabLight1 chart using ExTech light meter 160 4.50 LabLight2 chart using DAQ platform 161 4.51 LabLight2 chart using ExTech light meter 161 4.52 LabLight3 chart using DAQ platform 162 4.53 LabLight3 chart using ExTech light meter 162 4.54 LabLight1 comparison chart 163 4.55 LabLight2 comparison chart 163 4.56 LabLight3 comparison chart 163 xiv ABBREVIATION HFE - Human Factor and Ergonomics DAQ - Data Acquisition COM - Common terminal COG - Centre of gravity VDU - Visual display unit RH - Relative humidity CCM - Cycling chilled mirror dew point hygrometer 1 CHAPTER 1 INTRODUCTION This chapter gives the introduction on the subject of the project. A general overview on the field of study for this project.

1.1 Background